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Appendix VI.                          rii'7

Motor Dynamos.—These are true transformers of direct
urrent, and consist of motor and dynamo on one bed.    The

. 9SO.

?V\ / V^-;VV Vc

; A/\/\ /\/\/\ A /

V X X * X X X A

/   \ /     v /   \/   \ /   \ /   \ / V/  \

V        V        v        V         A/        \/        V        N

-current EC, Fig, 985, driv^ the motor M/which is coupled to a
generator D produdng a current E c, and the transformation may
bt whatever is required for the particular purpose.